1. GERRHOSAURUS. 121 
1. Gerrhosaurus validus. 
Gerrhosaurus vallidus (Sund.), Smith, Ill. 8. Afr., Rept., App. p. 9; 
Peters, Efvers. Vet. Akad. Forh. 1869, p. 659. 
robustus, Peters, Mon. Berl. Ac. 1854, p. 618, and Reise n. 
Mossamb. iii. p. 58, pl. ix. 
Head and body much depressed. Head-shields striated; fronto- 
nasal broader than long, not touching the rostral; prefrontals in 
contact, forming a long suture; a large, crescentic tympanic scale, 
partly covering the ear-opening. Dorsal shields feebly serrated 
posteriorly, tri- or quinquecarinate, in 28 or 30 longitudinal and 52 
or 53 transverse series (from the parietal shields to the base of the 
tail); ventrals in 14 or 16 longitudinal series. Femoral pores 18 
to 21 on each side. Tail nearly twice the length of head and body. 
Blackish brown above, each dorsal scale with a small yellow spot 
or short streak; in some specimens a yellow band extends along 
each side of the back; lower surfaces brown, throat and breast 
lighter. 
millim. voillim. 
Total length...... 513 Fore limb ...... .. 658 
Head .......... 36 Hind limb ........ 75 
Width of head.... 30 Taille ter eee aes 335 
Body .......... 142 
South and South-east Africa. 
a, Ad. Near the sources of the Orange Sir A. Smith [P.]. 
River. : Pelee 
6. Ad. Tette, Mozambique. Sir A. Smith [P.]. 
2. Gerrhosaurus major. 
Gerrhosaurus major, A. Dum. Cat. Méth. Rept. p. 189; Peters, 
Reise n. Mossamb. iii. p. 58. 
Head and body feebly depressed. Head-shields rugose ; fronto- 
nasal broader than long, its point in contact with the rostral; pre- 
frontals in contact, forming a long suture; a narrow, band-like 
shield on the anterior border of the ear-opening. Dorsal shields 
slightly rugose, strongly keeled, in 18 or 20 longitudinal and 32 
to 34 transverse series; ventrals in 10 longitudinal series. 11 to 
14 femoral pores on each side. Tail a little longer than head and 
body, slightly compressed in its posterior half. Fulvous-brown 
above, yellowish inferiorly. 
millim. millim. 
Total length ...... 406 Fore limb ........ 55 
FOAM es: ie ei ered ack 38 Hind limb........ 76 
Width of head .... 32 Tall sey the ates oreo 210 
BOY? risa ak sacs tie 158 
